Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis
The emergence and spread of wheat blast caused by fungal pathogen Magnaporthe oryzae pathotype Triticum is a threat to global wheat production. The resistance level and genetic loci for blast resistance in Chinese germplasm remain unknown. A panel of 266 bread wheat accessions from China, CIMMYT-Mex...
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KeAi Communications Co., Ltd.
2022-06-01
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Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514121001641 |
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author | Lei Wu Xinyao He Muhammad Rezaul Kabir Krishna K. Roy Md. Babul Anwar Felix Marza Yi He Peng Jiang Xu Zhang Pawan K. Singh |
author_facet | Lei Wu Xinyao He Muhammad Rezaul Kabir Krishna K. Roy Md. Babul Anwar Felix Marza Yi He Peng Jiang Xu Zhang Pawan K. Singh |
author_sort | Lei Wu |
collection | DOAJ |
description | The emergence and spread of wheat blast caused by fungal pathogen Magnaporthe oryzae pathotype Triticum is a threat to global wheat production. The resistance level and genetic loci for blast resistance in Chinese germplasm remain unknown. A panel of 266 bread wheat accessions from China, CIMMYT-Mexico and other countries was screened for head blast resistance under 12 field experiments in Bolivia and Bangladesh. Subsequently, a genome-wide association study was performed to understand the genetic basis of wheat blast resistance. The average blast index of all the accessions was 53.7% ± 12.7%, and 10 accessions including Chinese accessions Yumai 10 and Yu 02321 showed moderate to high levels of blast resistance, accounting for only 3.8% in the panel. Fifty-eight significant SNPs clustered in a 28.9 Mb interval on the 2AS/2NS translocation region, explaining phenotypic variation between 10.0% and 35.0%. The frequency of the 2AS/2NS translocation in the Chinese accessions was as low as 4.5%. These results indicated that the 2NS fragment was the only major locus conferring resistance to wheat blast in this panel, and the resistant and moderately resistant lines identified could be deployed in breeding. |
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language | English |
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publishDate | 2022-06-01 |
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spelling | doaj.art-a63d4c05eccb4475a2f8819daab75d8f2022-12-22T00:22:42ZengKeAi Communications Co., Ltd.Crop Journal2214-51412022-06-01103793801Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysisLei Wu0Xinyao He1Muhammad Rezaul Kabir2Krishna K. Roy3Md. Babul Anwar4Felix Marza5Yi He6Peng Jiang7Xu Zhang8Pawan K. Singh9CIMMYT-JAAS Joint Center for Wheat Diseases, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, ChinaInternational Maize and Wheat Improvement Center (CIMMYT), Apdo, Postal 6-641, 06600 Mexico D.F., MexicoBangladesh Wheat and Maize Research Institute (BWMRI), Nashipur, Dinajpur 5200, BangladeshBangladesh Wheat and Maize Research Institute (BWMRI), Nashipur, Dinajpur 5200, BangladeshBangladesh Wheat and Maize Research Institute (BWMRI), Nashipur, Dinajpur 5200, BangladeshInstituto Nacional de Innovación Agropecuaria y Forestal (INIAF), La Paz, BoliviaCIMMYT-JAAS Joint Center for Wheat Diseases, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, ChinaCIMMYT-JAAS Joint Center for Wheat Diseases, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, ChinaCIMMYT-JAAS Joint Center for Wheat Diseases, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, China; Corresponding authors.International Maize and Wheat Improvement Center (CIMMYT), Apdo, Postal 6-641, 06600 Mexico D.F., Mexico; Corresponding authors.The emergence and spread of wheat blast caused by fungal pathogen Magnaporthe oryzae pathotype Triticum is a threat to global wheat production. The resistance level and genetic loci for blast resistance in Chinese germplasm remain unknown. A panel of 266 bread wheat accessions from China, CIMMYT-Mexico and other countries was screened for head blast resistance under 12 field experiments in Bolivia and Bangladesh. Subsequently, a genome-wide association study was performed to understand the genetic basis of wheat blast resistance. The average blast index of all the accessions was 53.7% ± 12.7%, and 10 accessions including Chinese accessions Yumai 10 and Yu 02321 showed moderate to high levels of blast resistance, accounting for only 3.8% in the panel. Fifty-eight significant SNPs clustered in a 28.9 Mb interval on the 2AS/2NS translocation region, explaining phenotypic variation between 10.0% and 35.0%. The frequency of the 2AS/2NS translocation in the Chinese accessions was as low as 4.5%. These results indicated that the 2NS fragment was the only major locus conferring resistance to wheat blast in this panel, and the resistant and moderately resistant lines identified could be deployed in breeding.http://www.sciencedirect.com/science/article/pii/S2214514121001641Magnaporthe oryzae pathotype TriticumHost resistanceWheat blastGWAS |
spellingShingle | Lei Wu Xinyao He Muhammad Rezaul Kabir Krishna K. Roy Md. Babul Anwar Felix Marza Yi He Peng Jiang Xu Zhang Pawan K. Singh Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis Crop Journal Magnaporthe oryzae pathotype Triticum Host resistance Wheat blast GWAS |
title | Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis |
title_full | Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis |
title_fullStr | Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis |
title_full_unstemmed | Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis |
title_short | Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis |
title_sort | genetic sources and loci for wheat head blast resistance identified by genome wide association analysis |
topic | Magnaporthe oryzae pathotype Triticum Host resistance Wheat blast GWAS |
url | http://www.sciencedirect.com/science/article/pii/S2214514121001641 |
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